► 副詞
ふらふら [(1)ふらふら] [coll] meaning: irresponsible rank: 2
☆ 彼は妻子がいるのに他の女とふらふらしている ⇨ He has a wife and kids and still fooling around with other women
► 動詞
甘える [あまえる] meaning: irresponsible rank: 1
☆ お前、甘えてるんじゃねえよ ⇨ You, don’t be irresponsible, don’t expect others to take care of you (☛ A very strong expression)
甘ったれる [(5)あまったれる] meaning: irresponsible rank: 3
☆ あいつは考え方が甘ったれてる ⇨ His way of thinking is too irresponsible (☛ Irresponsible in a way that he/she expects others will take care of him/her, and his/her mistakes will be automatically forgiven)
► 名詞
甘え [あまえ] meaning: irresponsible rank: 1
☆ 彼にはいざとなったら親が助けてくれるという甘えがある ⇨ He has an irresponsible idea that his parents will save him in a pinch
► 形容動詞
適当 [てきとう] [coll] meaning: irresponsible rank: 1
☆ 適当なこと言うんじゃねえ！ ⇨ Don’t talk BS!
☆ 適当なやり方をするからこういう事になるんだ ⇨ Something like this happens because you cut corners
好い加減 [いいかげん] [coll] meaning: irresponsible rank: 2
☆ 彼は何につけてもいい加減だ ⇨ He is irresponsible about everything. He never follow things through
☆ いい加減な事を言うな ⇨ Don’t make irresponsible remarks (☛ Note there is no stress)
無責任 [(2)むせきにん] meaning: irresponsible rank: 2
☆ なんて無責任な奴だ！ ⇨ What an irresponsible bastard!